With the SALTO XS4 cylindrical latch you can replace existing traditional knob sets, and upgrade them with a state of the art electronic access control system. SALTO Cartridge cylindrical latches are ANSI A156.2 Grade1 or 2, depending on the model and enable users to replace old cylindrical or tubular latches for new high quality ones compatible with SALTO electronic escutcheons. Lock case, latch and deadbolt made of steel. ANSI A156.2 Grade 1 or 2 cylindrical latches. With auxiliary latch (anticard) that deadlocks the latch. 8mm square spindle. Turning angle 54º. Different backset lengths 60mm, 70mm, 95mm and 127mm. Choice of finishes satin stainless steel or polished brass. Squared front plate. UL listed 3 hours fire rating.